/* ==========================================================================
   Keyframes
   ========================================================================== */
@keyframes draw-arc {
  to { stroke-dashoffset: 0; }
}
@keyframes fade-in-dot {
  to { opacity: 1; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes pop-in {
  from { opacity: 0; transform: scale(0.94) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes slide-in-toast {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}
@keyframes gentle-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(2deg); }
}
@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}
@keyframes checkmark-draw {
  to { stroke-dashoffset: 0; }
}

/* ==========================================================================
   Scroll-reveal utility (driven by main.js IntersectionObserver)
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* stagger children of a revealed grid */
.reveal-group .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-group .reveal:nth-child(2) { transition-delay: 80ms; }
.reveal-group .reveal:nth-child(3) { transition-delay: 160ms; }
.reveal-group .reveal:nth-child(4) { transition-delay: 240ms; }
.reveal-group .reveal:nth-child(5) { transition-delay: 320ms; }
.reveal-group .reveal:nth-child(6) { transition-delay: 400ms; }

/* ==========================================================================
   Small utility animation classes
   ========================================================================== */
.animate-fade-in { animation: fade-in var(--duration-base) var(--ease-standard); }
.animate-fade-up { animation: fade-up var(--duration-slow) var(--ease-out); }
.animate-float { animation: gentle-float 7s ease-in-out infinite; }
.animate-pulse-soft { animation: pulse-soft 2.4s ease-in-out infinite; }

.shake { animation: shake 0.4s var(--ease-standard); }
@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-4px); }
  40%, 60% { transform: translateX(4px); }
}